Ipmi kvm console through java switching between no signal and 1024x768 in truenas scale 25.04.1

[carlatpg]

I have a supermicro motherboard model X9DRT-HF. I have already updated ipmi to 3.62 and the bios to 3.3.

While booting, the ipmi kvm console output through java stays at the resolution specified. But once truenas scale 25.04.1 starts booting up, after the kernel has been selected to boot from, it will constantly switch between no signal and 1024x768. This makes it so that I can’t access it using a keyboard in the case where I can’t access it using the webui or ssh due to no network access except via the ipmi network port.

To access the ipmi kvm console through java, I used ipmiview 2.23.0 from supermicro, which includes their own version of x86 32-bit java since the ipmi firmware 3.62 didn’t include support for x86 64-bit java versions.

This was working in truenas scale 23.

[carlatpg]

Some more details as I just did a reboot. It maintains the output when the resolution is 752x413.

I also saw as it booted, it outputted several times: edid has major version 3, instead of 1.

[carlatpg]

can I set the resolution manually once the kernel module for ipmi output is loaded?

[neofusion]

Just speculating here, but there was another thread where a user explained how to add a kernel argument to set a specific resolution:

Setting grub menu resolution

I’m running 24.04 on a box with only a VGA output. I have a KVM I’m trying to use to remotely monitor/access when console view is required. For whatever reason, the capture card isn’t getting a signal unless I explicitly set the resolution. A regular monitor attached to the box has no issue, so I’m guessing there’s no negotiation happening to establish a display output resolution automatically. I end up only seeing the BIOS’s splash and text screens, and then nothing once grub’s menu would app…

Since you didn’t mention grub I imagine you could stick to the first paragraph only.